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用括號中單詞的適當(dāng)形式填空。

1．Let’s go ___________（shop）now，Mary．

2．Look! A tiger is running after some ____________（sheep）

3．How many ___________（hour）do you sleep every night?

4．There are _____________（many）girl students in Class 2 than in Class l．

5．His father takes exercise every day，so he is very __________（health）

6．If you want to play the piano very well，you must __________it every day（practice）．

7．Although they are twins，there are some differences between__________．（they）

8．I live in a town __________Alice Springs．（call）

9．In big cities，students usually _________bikes to school or take buses．（ride）

10．My mother hardly ever __________exercise，so she isn’t in good health．（take）